I'd like to set up a DB-Server that keeps copies of our productive db for an external db-assistant. He should prepare chores on the test-server and mail the sql scripts to me. I'll look over those scripts and run them against the productive db myself.
So I'd like to have a daily cron job dump the main db, rename the test-db to something with a date in it. Like test_db --> test_db_20131024 Create a new test_db and import the dump of the main db.
So far no problem but how could I limit the number of test_dbs to 5? I'd like to keep those test_dbs 5 days and then drop them.